refactor: extract logic from QrScanner and UrlCleaner to composables

This commit is contained in:
2026-03-03 11:19:57 +00:00
parent ee387d9637
commit dff8a2a0ab
5 changed files with 453 additions and 357 deletions

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import { ref, watch, onUnmounted } from 'vue'
export function useCamera(videoRef) {
const stream = ref(null)
const facingMode = ref('environment')
const hasMultipleCameras = ref(false)
const isMirrored = ref(false)
const error = ref('')
const checkCameras = async () => {
try {
if (!navigator.mediaDevices || !navigator.mediaDevices.enumerateDevices) {
return
}
const devices = await navigator.mediaDevices.enumerateDevices()
const cameras = devices.filter(d => d.kind === 'videoinput')
hasMultipleCameras.value = cameras.length > 1
} catch (e) {
console.error('Error checking cameras:', e)
}
}
const stopCamera = () => {
if (stream.value) {
stream.value.getTracks().forEach(t => t.stop())
stream.value = null
}
}
const startCamera = async () => {
stopCamera()
error.value = ''
try {
const constraints = {
video: {
facingMode: facingMode.value,
width: { ideal: 1280 },
height: { ideal: 720 }
}
}
const mediaStream = await navigator.mediaDevices.getUserMedia(constraints)
stream.value = mediaStream
// Detect actual facing mode to mirror front camera correctly
const videoTrack = mediaStream.getVideoTracks()[0]
if (videoTrack) {
const settings = videoTrack.getSettings()
if (settings.facingMode) {
isMirrored.value = settings.facingMode === 'user'
} else {
// Fallback: check label for desktop cameras or assume requested mode
const label = videoTrack.label ? videoTrack.label.toLowerCase() : ''
if (label.includes('front') || label.includes('facetime') || label.includes('macbook')) {
isMirrored.value = true
} else {
isMirrored.value = facingMode.value === 'user'
}
}
}
if (videoRef.value) {
videoRef.value.srcObject = mediaStream
return new Promise((resolve) => {
videoRef.value.onloadedmetadata = () => {
videoRef.value.play().catch(e => console.error('Play error', e))
resolve()
}
})
}
} catch (err) {
if (err.name === 'NotAllowedError') {
error.value = 'Camera permission denied'
} else if (err.name === 'NotFoundError') {
error.value = 'No camera found'
} else {
error.value = `Camera error: ${err.name}`
}
throw err // Let caller know it failed
}
}
const switchCamera = () => {
facingMode.value = facingMode.value === 'environment' ? 'user' : 'environment'
}
watch(facingMode, () => {
if (stream.value) {
// Re-start if already running
startCamera().catch(() => { })
}
})
onUnmounted(() => {
stopCamera()
})
return {
stream,
facingMode,
hasMultipleCameras,
isMirrored,
error,
checkCameras,
startCamera,
stopCamera,
switchCamera
}
}

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import { ref, onMounted, onUnmounted } from 'vue'
export function useQrDetection(videoRef, overlayCanvasRef) {
const barcodeDetector = ref(null)
const isDetecting = ref(false)
const error = ref('')
let scanRafId = null
// Function to initialize detector
const initDetector = async () => {
if (!barcodeDetector.value) {
if ('BarcodeDetector' in window) {
try {
// Formats are optional, but specifying qr_code might be faster
const formats = await window.BarcodeDetector.getSupportedFormats()
if (formats.includes('qr_code')) {
barcodeDetector.value = new window.BarcodeDetector({ formats: ['qr_code'] })
} else {
barcodeDetector.value = new window.BarcodeDetector()
}
} catch (e) {
// Fallback
barcodeDetector.value = new window.BarcodeDetector()
}
} else {
error.value = 'Barcode Detection API not supported on this device/browser.'
}
}
}
const paintDetections = (codes) => {
const canvas = overlayCanvasRef.value
const video = videoRef.value
if (!canvas || !video) return
const ctx = canvas.getContext('2d')
const { width, height } = canvas.getBoundingClientRect()
// Update canvas size if needed (to match CSS size)
if (canvas.width !== width || canvas.height !== height) {
canvas.width = width
canvas.height = height
}
ctx.clearRect(0, 0, width, height)
if (!codes || codes.length === 0) return
const vw = video.videoWidth
const vh = video.videoHeight
if (!vw || !vh) return
// Calculate object-fit: cover scaling
const videoRatio = vw / vh
const canvasRatio = width / height
let drawWidth, drawHeight, startX, startY
if (canvasRatio > videoRatio) {
// Canvas is wider than video (video cropped top/bottom)
drawWidth = width
drawHeight = width / videoRatio
startX = 0
startY = (height - drawHeight) / 2
} else {
// Canvas is taller than video (video cropped left/right)
drawHeight = height
drawWidth = height * videoRatio
startY = 0
startX = (width - drawWidth) / 2
}
const scale = drawWidth / vw
// Styles
const styles = getComputedStyle(document.documentElement)
const accent = styles.getPropertyValue('--primary-accent').trim() || '#00f2fe'
ctx.lineWidth = 4
ctx.strokeStyle = accent
ctx.fillStyle = accent
codes.forEach(code => {
const points = code.cornerPoints
if (!points || points.length < 4) return
ctx.beginPath()
const transform = (p) => {
let x = p.x * scale + startX
let y = p.y * scale + startY
return { x, y }
}
const p0 = transform(points[0])
ctx.moveTo(p0.x, p0.y)
for (let i = 1; i < points.length; i++) {
const p = transform(points[i])
ctx.lineTo(p.x, p.y)
}
ctx.closePath()
ctx.stroke()
// Draw corners
points.forEach(p => {
const tp = transform(p)
ctx.beginPath()
ctx.arc(tp.x, tp.y, 4, 0, Math.PI * 2)
ctx.fill()
})
})
}
const startDetection = async (onDetectCallback) => {
error.value = ''
try {
await initDetector()
if (!barcodeDetector.value) {
if (!error.value) error.value = 'Barcode Detector failed to initialize'
return
}
isDetecting.value = true
const detectLoop = async () => {
if (!isDetecting.value || !videoRef.value || videoRef.value.paused || videoRef.value.ended) {
scanRafId = requestAnimationFrame(detectLoop)
return
}
try {
const codes = await barcodeDetector.value.detect(videoRef.value)
paintDetections(codes)
if (codes.length > 0 && onDetectCallback) {
onDetectCallback(codes)
}
} catch (e) {
// Silent catch for intermittent detection frames failing
}
if (isDetecting.value) {
scanRafId = requestAnimationFrame(detectLoop)
}
}
detectLoop() // start loop
} catch (e) {
error.value = `Detection error: ${e.message}`
}
}
const stopDetection = () => {
isDetecting.value = false
if (scanRafId) cancelAnimationFrame(scanRafId)
// Clear canvas
if (overlayCanvasRef.value) {
const ctx = overlayCanvasRef.value.getContext('2d')
ctx.clearRect(0, 0, overlayCanvasRef.value.width, overlayCanvasRef.value.height)
}
}
onUnmounted(() => {
stopDetection()
})
return {
error,
isDetecting,
startDetection,
stopDetection
}
}

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import { useLocalStorage } from './useLocalStorage'
export function useUrlCleaner() {
const cleanedHistory = useLocalStorage('url-cleaner-history', [])
const isWatchEnabled = useLocalStorage('url-cleaner-watch-enabled', false)
const defaultExceptions = [
{ id: 'yt', domainPattern: '*.youtube.com', keepParams: ['v', 't'], keepHash: false, keepAllParams: false, isEnabled: true, isDefault: true },
{ id: 'yt-short', domainPattern: 'youtu.be', keepParams: ['t'], keepHash: false, keepAllParams: false, isEnabled: true, isDefault: true }
]
const exceptions = useLocalStorage('url-cleaner-exceptions', defaultExceptions)
const matchDomain = (pattern, domain) => {
// Escape regex chars except *
const regexString = '^' + pattern.replace(/[.+^${}()|[\]\\]/g, '\\$&').replace(/\*/g, '.*') + '$'
return new RegExp(regexString, 'i').test(domain)
}
const processUrl = (text, autoClipboard = false, writeClipboardFn = null) => {
try {
// Basic URL validation
if (!text.match(/^https?:\/\//i)) {
if (autoClipboard) return text
}
const originalLength = text.length
let cleanedUrl = text
try {
const urlObj = new URL(text)
const hostname = urlObj.hostname
const matchedRule = exceptions.value.find(rule =>
rule.isEnabled && matchDomain(rule.domainPattern, hostname)
)
if (matchedRule) {
if (!matchedRule.keepAllParams) {
const params = new URLSearchParams(urlObj.search)
const keys = Array.from(params.keys())
for (const key of keys) {
if (!matchedRule.keepParams.includes(key)) {
params.delete(key)
}
}
urlObj.search = params.toString()
}
if (!matchedRule.keepHash) {
urlObj.hash = ''
}
} else {
if (urlObj.search || urlObj.hash) {
urlObj.search = ''
urlObj.hash = ''
}
}
cleanedUrl = urlObj.toString()
} catch (e) {
return text
}
if (cleanedUrl === text && autoClipboard) {
return text
}
const newLength = cleanedUrl.length
const savedChars = originalLength - newLength
const savedPercent = originalLength > 0 ? Math.round((savedChars / originalLength) * 100) : 0
const entry = {
id: Date.now(),
original: text,
cleaned: cleanedUrl,
savedPercent,
timestamp: new Date().toLocaleTimeString()
}
cleanedHistory.value.unshift(entry)
if (cleanedHistory.value.length > 50) {
cleanedHistory.value.pop()
}
if (autoClipboard && savedChars > 0 && writeClipboardFn) {
writeClipboardFn(cleanedUrl)
}
return cleanedUrl
} catch (e) {
console.error('Error processing URL:', e)
return text
}
}
const removeEntry = (id) => {
cleanedHistory.value = cleanedHistory.value.filter(item => item.id !== id)
}
const clearHistory = () => {
cleanedHistory.value = []
}
return {
cleanedHistory,
isWatchEnabled,
exceptions,
defaultExceptions,
processUrl,
removeEntry,
clearHistory
}
}